Animation Compression Library
Multi Theft Auto is a game engine
Solar2D Game Engine main repository (ex Corona SDK)
Cross-Platform C++ 2D/3D game engine
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Powerful, mature open-source cross-platform game engine for Python
Open-source engine for Heroes of Might and Magic III
2D game development library for Ruby and C++
Urho3D Game engine
RPG Maker 2000/2003 and EasyRPG games interpreter
A multi core friendly rigid body physics and collision detection lib
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.
RTSish Game Engine
A fast, scalable, distributed game server engine/framework for C++
A 2D game engine and level editor
Portable game engine with main focus on point-and-click adventures
Game engine for playing tomb raider 1 - 5 levels.
2D game engine for traditional platform games
Mahasona engine is an open source game engine.
2D physics engine for games
Gorgon Game Engine (GGE) is a C++ game engine that handles many tasks.
3D Game engine
A 2D game engine base on OpenGL and SDL,support for Windows & Linux